Which of the following uses repeated infinitives ("to" + verb) in a parallel structure for increased persuasive power? A. Build positive vibes by trying to be optimistic, to eat more fruits, and to go outside. B. Building positive vibes means being optimistic, eating more fruits, and to go outside. C. When Kathy builds positive vibes she tries to be optimistic, eating fruits, and going outside. D. Building positive vibes means paying attention to attitude, to others, and to time in nature.​